Cooking machine



Nov. 11, 1930.

M. c. PETERSEN COOKING MACHINE Filed Oct. '17, 1927 4 Sheets-Sheet 1 Mari??? C Pei-"91? en Nov. 11, 1930. c. PETERSEN COOKING MACHINE iiled Oct. 17. 1927 4 Sheets-Sheet 2 7537 11,, 67 6g 70 1ev {if 17746.55: M, /Mg 6mm, Jami 1 01mm NOV. 11, 1930. PETERSEN r, 1,781,669

COOKING MACHINE F-iled 001;. 17. 1927 4 Sheets-Sheet 5 (law-55. MLM Z Z/ W film/1A1 V M. C. PETERSEN Nov. 11, 1930.

COOKING MAGHI NE Filed Oct. 1'7, 1927 4-Sheets-Sheet 4 QfnverzTir Marfz'zz 61%??2150/1 6M4 "011w.

Patented Nov. 11, 1930 IUNETED STATES PA E T OFFICE. j;

MARTIN o. rnrnnsnn, or irswicmlsourn DAKOTA oooKING MAC INE Application, filed October 17,1927. Seria1- 1fl'oh226k49.

This inventionrelates to cooking machines and its object is the provision of an improved.

cooking process and a generally improved, slmpllfied and inexpensive machine, suitable for public, display and having increased bination of diiferent cookers; one of whichas desired. I find that by using one of the utility and better adapted to meet the demand thereon, as it varies or fluctuates with the busyand dull periods ofoperation.

The invention provides an improved comis. adapted for cooking the. Frankfurt's" or other articles separately from the other cook ers or for preparing theiarticle, or articles of food for one of the othercookers selectively cookers for preparing. the articlesfor one of the other cookers, I the output of the p machine may be materially increased. i The invention further provides ,an improved storage compartment arrangement and an improved arrangement of heaters for the different cookers and for the difierent compartments.

The other provisions of the invention will be apparent from the following detailed description taken in connection with the ac c ompanying drawings, in which n Fig. 1 is a front elevational View of a machine embodying the present invent-ion;

Fig. 2 is a plan view of the machine shown in Fig.1; Fig; 3 is a horizontal section taken on the line 38 of Fig. 1; I M 7 v Fig. 4: is a vertical transverse section taken on the line -4 of Fig. l;

Fig. 5 is a vertical transversefsection taken on the line 55 of Fig. 1; i I

Fig. 6 is a vertical transverse section take on the line 66 of Fig. 1; V V I Fi 7 is a fragmentary detail section taken on the line 77 of 6; Fig. 8 is a vertical longitudinal taken on the line 88 of Fig. 2;

Fig. 9 is a fragmentary detail sectlon taken section 45 on the line 9-9 ofFigIZ; and

Fig. 10 is a fragmentary detail section taken on the line 10-10 of Fig. 9; p

Referring to the drawings, the machine shown comprises an upright housing 5 which may be formed of sheet metaland which has "thereto.

theretoand thefsu'pport's forming four legs 2( one on each ofithefour corners of the main. body'portion of the housing fi. An

endl wallfi22 separates theiend extension 10 from the main body of the machine and closes the adjacent end of the machine.

The top 2 1 has a pairof'longitudinally spaced bearing brackets 25 and 26 suitably mounted thereon injlongitu'dinal alignment and substantially centrally between the front andfb ack of the machine. Journa-led be tween and'a't itsjopposite ends on thebrackets V 25 and .26 is a cylindrical drum-like carrier The carrier 28 comprises a pair of generally circular end members'29, 29, with a plurality'of ciroumferentially spaced and cylindric'ally arranged rods or stays 30 extending longitudinally;between the end members 29,

29 and suitably secured at their opposite ends The rods 30 form a generally cylindrical open enclosure in which the Frankfurts or otherarticles to be roasted are placed and the open formation of this enclosure exposes theFrank fu'rts or other articles therein directly to the cooking heat to produce an open roasting or toastingof the articles. The arrangement and spacing ofthe rods 30 in the particular machine shown is suitable forroasting Frankfurts or other articles but it is to be understood that this open work 'structuremayzbe Varied as desired.

; The ends of the rods 30 may be welded or otherwise suitably secured to ring members 32'with the end members 29 provided with longitudinally directedmarginal flanges 34 adaptedto fitover the ring member 32and to.

Suitable screws or the like;

be.detachably secured thereto by meansof For the purpose of introducing the Frankfurts or other articles to be cooked into the carrier 28, the carriernis provided with a door 35 hinged as at 36 upon one of the rods adjacent the opening 37 which is adapted to be opened and closed by the door 35.

The door is preferably of longitudinal rod or open work formation similar to the cylindrical enclosure of the carrier and when closed forming a part thereof. The door 35 along its opposite-edges has frame strips 39 (Fig. 7 and for the purpose of latching the doorin closed position, there are a pair of slidable latch members 40. The inner ends of the latch members 40 may be turned out at 42 so that they may be conveniently manipulated with the fingers. These latch members 40 are slidably mounted in straps 43 on the 7 door and when projected with their outer carrier :28 a Suitable electric motor 45 is provided. The motor,45j(Fig. 8) is connected at 46 through a suitable reduction gearing 4;? with ashatt 48, having a sprocket 49 r0- tatable therewith.

Rotatable upon one of the spindle eXten-.

sions at one end'of the drum or carrier 28, is a sprocket 53 and trained over the sprockets 49 and 53 is a suitable driving chain 54. The chain 54 turns the sprocket 53 with the sprocket 49 and the sprockets 49 and 53 may be proportioned to give further speed reduction at this point, if desired. The drum or carrier 28, or spindle 52 is providedwith clutch means 55. (Fig. 8) and the sprocket 53 is providedwithco-operating clutch means 56, shiftable into and out of driving engagement with the clutch means 55 by means of a. suitable lever 57. The clutch is shown as disengaged in Fig. 8 so that the sprocket 53 will be'rotated without rotating the drum or carrier 28 and by shifting the clutch means 56 into engagement with the clutch means 55, the drum or carrier 28 is connected to be rotated with the. sprocket 53.

At thebottom of the drum or carrier 28, the machine has an vopening or depression 59 for receiving the bo tom of the drum or carrier which depends below thetop 24 of the machine. ,The sidesof this opening or depres-. sion may be provided with suitable side walls 6'0 as shown.v V

,Underlying, the drumfor carrier 28 is a hot plate Or'heatcr 61 which is preferably curved, as showmtaconform. substantially with the periphery ofthecarrier 28.. with a-slight space between. the heater and. the carrier, so, that the movement of ca i will, not be, in;

tertered withby the heater. The heater 61 is shown as having parallel upper and lower plates 62 and 63'closed at the ends at 64 and provided internally with a suitable resistance conductor 65, which may be imbedded in asbestos, or other suitable insulating material as indicated at 66.

t will be noted in Fig. 6 that the heater 61 does not underlie the entire bottom of the carrier or drum but extends back only partially from the front of the machine to leave an opening 68 through which the roasted Frankfurts or other contents of the drum 28 may be discharged into a storage compartment in the form of a drawer 69 from which the cooked Frankfurts or other articles may be withdrawn for use as desired. The drawer 69 is provided with a handle 70 and is slidably mounted upon angle brackets 71 within the housing of the machine. In order to discharge the Frankfurts or other contents from the carrier, through the opening 68 and into the drawer 69, the carrier door 35 is swung into openposition and the carrier is turned to position the carrier opening 37 over the opening 68, as shown indotted lines in Fig; 6, so thattheFraukiturts orv other articles will dropbygravity from the carrier through the opening 68 and into the drawer 69.- It is to be understood that the Frankfurts or other articles may be removed through the opening 37-Without discharging them into the drawer 69. The drawer 69 underlies the cooking heater 61 .and is heated thereby to maintainthe cooked Frankfurts heated and in condition for use as calledafor. The rear wall 8 is provided adjacentthe opening 68 with adefiector 72 for directing the Frankfurts or other articles through the opening 68" and into the drawer 69. l 7

By the process of the present invent-ion the door 35 of the carrier 28 is opened. and the Frankfurt-s01". other articles are introduced through the opening and into the carrier. .Then withithe heater 61 turned on by means of a suitable snap switch 73. (Fig; l) the rotation of the carrier28 is started by turning on the motor circuit by means of a switch 74 and throwinginor engaging'the clutch means 55, 56. As the carrier 6 begins to turn the Frankfurts or other articles thereinarecarried with the-carrier upwardiy in the direction of: rotation of the carrier and as they approach or reach thehorizontal axis of the carrier they tumble back or drop and are thereby turned over." automatically and continuously with the-rotation of the carrier to expose all surfaces to the. heater and'prm duce auniform' roasting or. toasting of' the articles. The druinorcarrier-formsinetlect a tumbling. carrier which. continuously tumbles the articlesv therein with therotationoi.

the carrier, continuously turningthem over 01,H.,HI1lS?OIIlI.8)PQSl1K to the heat. which may be directly mposed, pon. he articles.

through the open workcarricr construction.

Underlying thedrawer 6 is a relatively 7 large storage bin or drawer 76 provided with a handle 77 and adapted for storingrolls,

buns, bread or other articles for making up sandwiches orto be served from the machine. The drawer 76 is slldably 'nio'unted upon v angle brackets '4' 8 within the housing of the 'themotor and reduction gearing carried thereby to be raised or lowered for the purpose of tightening orslackeningthe dr1v- 111g chain 54.

The end extension 10 is provided between the upper and lower end -oftl1e-wall 18 with a horizontal hot plate 82 having top, bottom and marginal walls enclosing the heating resistance conductor 88 which may be embedded in asbestos or other suitable insulatingunatei'i'al. 84 as shownin Fig.8. The liot plate 82 is supported in horizontalposition upon other article's-of'food.

angle brackets 85. and'the walls ofthehot plate: may be-cast or otherwise"suitably formed. The hot plate82 :is of generally rectangular formation as shown in Fig. 3 and its. upper surface. forms-a cookingsurface. for frying eggs, Hamburger steal; or

. The top of the end extension 10 is covered bya Wall 86 of glass or other suitable transparent material which glass wall 86-forms a service counter for serving the articles from the machine. Y 1

7 Underlying. the hotplate- 82 is-a drawer 88 provided with 'ahandle 89 and slidably: mounted upon angle brackets 90 in the end extension '10. The drawer 88 is provided, as shown in Fig. 5. witha rear compartment for storing Hamburger steak or other food adapted tobe cooked upon the hot plate 82. This .rear compartment is designated at 91 and at the. front of the drawer 88 is a removable receptacle 92 for catching the grease from the upper orcooking surface of the hot plate 82. The upper or cooking surface of the hot plate 82 is provided with asurrounding drain groove 93 and at the front of the plate is a passageway 94' (Fig. 5) which opens from the groove 98 down through the hot plate82 and forms a drain passage for de livering the grease from the drain groove 93 to the receptacle 92 which may be emptied from time to time by removing the receptacle 92 from the drawer 88. a

It will be notedthat by disposition between the overlying hot plate 82and the drawer 88 the hot plate 82 forms the cooking heater for the hot plate and at the same time maintains the contents of the drawer'88in heated condition. The circuit through the resistance element 83 of the'hot plate 82 is controlled by a suitable switch 95 on the front of the machine.

Instead of using the relatively large drawer or compartment 761% a storage compartment- I contemplate embodying a refrigerating-unit in the'machine and using thisdrawer'or'compart1nent76 as arefrigerating compartment. The refrigerating .unitcould be operated by the motor/15., 1 I I At its opposite end the machineis'provided with a receptacle 100, having suspended support by a flange 102 along its upper edge, which flange 102 is adapted to rest upon the topportion 24 of the machine. Thereceptacle 100 may be divided by'a partition 103 as shown in Fig.4and. it depends-into the housing of the machine being preferably adapted "tojbe lifted "from the machine and conveniently replaced. The tops of the com partments l04"of.the receptacle 100are pro vided with doors 105 suitably'hingedat'106 and headed along their free edges 'at-107.

WVhen the receptacle 100 is in place in the machine its bottom portion "depends into areceptacle 108 which is preferablysurrounded by asbestos 1109' or other-suitable insulating material interposed betweenthe wall of the receptacle 108-and the adjacent walls of the machine; {Underlyingthe receptacle orpan 108 is aheater 110 which maycompriseia'suit able resistance conductor 112 embedded in asbestos or other suitableinsulating material 113 which is in turn covered by the-walls of the heater. The'circuit through the heater 110 is controlled by a suitable, switch 115 arrangedon the front of the machine as shown in Fig.1.

Underlying the heater 110 is a storage drawerllS. This .drawer 118 is heated by the overlying heater 110 and is slidably mountedupon brackets'119 in the housing of the :machine; The drawer 118 may be provided with a suitable handle 120.

. Thereceptacle 108 isadapted to containa body of water and for the purpose of introduclng the water into the receptacle a suitable filler125 is provided; The filler has an intake or'receiving cup 126 whichmay beprovided with a removable cover 127and a pipe and T connection 128opens from the'cup 126 through the wall ofthe machine and through the wall of the receptacle 108 into the interior thereof. .By introducing or placingwa ter intoithe receptacle 108-andturning on the heater llO'the Frankfurts or other'articles maybe placed inthefcom artments' 104 and carrier 28. 7 While the carrier 28' and the automatictumbling' process has a wide range of capacity,by placing the Frankfurts in the compartments 104 and steaming them before the roasting process the capacity of the ma i chine may beincreased by decreasing the time required to roast the Frankfurts because of their preceding preparation in thecompartments 104. One or both of the compartments 104 are also adapted for use as storage compartments for maintaining the Frankfurts in proper condition either before or after cooklIlg-Ol roasting and by placing water in one or bothof the compartments 104: the Frankfurtsorlother' articles may be boiled directly therein thereby greatly increasing the utility ofthemachine. 1 y

The filler 125 may be provided with a spout or faucet 130 for withdrawing hot water from the receptacle 108, for use as desired. The heater 110 obviously "forms a common heater for the vessel 108 as Well as for the compart- 'ments 104; and drawer: 118. The compart+ [ment or space} above the hot plate 82 and between it andthe glassplate 86 may be closed atthe back orsides with the front adjacent the o erator open to permit the food to be place upon and removed from. the hot plate 82. The improved'cooking, process has a widerange of capacity and theautomatic tumbling produces good "results. The rotation of t e carrier 28, with the articles cooking therein; providesan attractive display and the machine has increasedutility with the various cookingyand heater arrangements as well as the storage compartments and other parts ar= ranged compactly and? for great eflicien'cy' I do not intend to be limitedto the precise details shown or described. I 1

Iclaimz' a, 1. In a machine ofthe class described, the combination of a generally cylindrical -'car-' rier for looselyholdingr the articles, a receptacle underlying the carrier, a heater completely encased in a casing interposed ,be-

tween the carrier and said receptacle and curved about the periphery of the carrier to impose-theheat uniformly and over azrelaa tively. great area Without extending across the entire bottom of the carrier, said heater extending only partially about the bottom of the/carrier to form a space opening from the carrier to said receptacleand a door on said carrier adapted to be registered with said space forithe delivery of the articles by gravity from saidLcarrier to said receptacle. I 2. In: ainachine of the class described, the combination of a-rotatable: cylindrical? roast ing drum 1 for loosely holding; Frankfurters,

' a'heater completely encasedin a curved Inc-- tallic, casing conformingto the contour of said drumiand underlying a part of it, and

means for rotating: said drum to thereby tumble the Frankfurters in'it to evenly; expose-them to said-heater.

3. In a machineof the class described, the,

combination of a rotatable cylindrical roast- .ing drum for. loosely holding Frankfurters, anelectric heater completely encased a1 erv mat ip asing co firmi g tothe one menses by tumble the Frankfurters in it to evenly expose them to said heater.

4:. Ina machine of the class described, the combination of a rotatable cylindrical roasting drum for loosely holding Frankfurters, a heaterunit underlying a part of said drum, said unit comprising a completely closed metallic casing having a curved surface conforming to the contour of said drum and containing the heat generating means, va food storage drawer, said drawer being disposed beneath said heater unit and extending beyond it under the remainder of the lower side of said drum, means for rotating said drum to thereby evenly expose the Frankfurters to said heater, and means for disconnecting said drum from said rotating means and for stopping it to permit discharging the Frankfurters into said drawer.

5. In a. machine of the class described, the combination of a rotatable cylindrical roasting drum for loosely holding Frankfurters, said drum comprising circular end plates and a plurality of rods attached to the edges of the plates and extending between them, a heater unit underlying a part of said drum, said unit comprising a completely closed metallic casing having a curved surface conforming to the contour of said drum and containing the heat generating means, a food storage drawer, said drawer being disposed beneath said heater unit and extending beyond it under the remainder of the lower side of said drum, means for rotating said drum to thereby evenly expose Frankfurters to said heater,a door formed of said side rods and hinged to said drum, and means for disconnecting said drum from said rotating means and for stopping it with said door over said drawer to permit discharging the Frankfurters into said drawer.

6. As an article of manufacture, a food vending machine comprising a cabinet containing a steam cooking compartment and a heater therefor, a revolving cylindrical roaster and a heater therefor, a hot plate and a heater therefor, said heaters comprising'a heating unit completely encased in a metallic casing, the bottom of which forms the top of an opening below the heaters, and a food storage drawer disposed in said openings and warmed by said heaters.

In witness whereof, I hereunto subscribe my name this 8th day of October, 1927.

V 'MARTIN G. PETERSEN. 

